Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/65-16 | 185/60-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27 (685.9) | 23.74 (603) | -3.26 (-82.9) -12.1% |
| Width inches (mm) | 8.46 (215) | 7.28 (185) | -1.18 (-30) -14% |
| Circum. inches (mm) | 84.84 (2154.82) | 74.58 (1894.38) | -10.25 (-260.44) -12.1% |
| Sidewall Height inches (mm) | 5.5 (139.75) | 4.37 (111) | -1.13 (-28.75) -20.6% |
| Revolutions per mile (km) | 746.86 (464.08) | 849.54 (527.88) | 102.68 (63.8) 13.7% |
185/60-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.58 mph (28.3 km/h) |
| 25 mph (40.23 km/h) | 21.98 mph (35.37 km/h) |
| 30 mph (48.28 km/h) | 26.37 mph (42.45 km/h) |
| 35 mph (56.33 km/h) | 30.77 mph (49.52 km/h) |
| 40 mph (64.37 km/h) | 35.17 mph (56.59 km/h) |
| 45 mph (72.42 km/h) | 39.56 mph (63.67 km/h) |
| 50 mph (80.47 km/h) | 43.96 mph (70.74 km/h) |
| 55 mph (88.51 km/h) | 48.35 mph (77.82 km/h) |
| 60 mph (96.56 km/h) | 52.75 mph (84.89 km/h) |
| 65 mph (104.61 km/h) | 57.14 mph (91.96 km/h) |
| 70 mph (112.65 km/h) | 61.54 mph (99.04 km/h) |
| 75 mph (120.7 km/h) | 65.94 mph (106.11 km/h) |
| 80 mph (128.75 km/h) | 70.33 mph (113.19 km/h) |
| 85 mph (136.79 km/h) | 74.73 mph (120.26 km/h) |
| 90 mph (144.84 km/h) | 79.12 mph (127.34 km/h) |
| 95 mph (152.89 km/h) | 83.52 mph (134.41 km/h) |
| 100 mph (160.93 km/h) | 87.91 mph (141.48 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2162 | 2511 | 2705 | 2824 | 2953 | 3045 | 3146 | 3266 | 3431 | 3597 | 3781 | 3928 | 4195 | 4489 | 4719 | 4867 | 4949 | 5253 | 5676 | 6596 |
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